during internal inspection of a floating roof storage tank, we have detected external corrosion of annular plat of the floor

this corrosion is localised in the 100 mm inward from the shell and sems to be a goove corrosion with the remaining thickness of 2 mm in some areas

the legs of the weld of the shell to bottom is free from corrosion and the thickness of the projection of the annular plat outside the shell is 4 mm

according to API 653 table 4.5 the min thickness of the annular plat for our case is 0.17 in (stress < 24300 psi and thickness of first shell course < 0.75 in)

my question is:
Before changing the annular plat, it is tolerable to put the tank in service with a maximum fill hight of 6 meter (insted of original maximum fill hight 17 meter) corresponding to a stress of 7597 psi of the first shell course

what is the type of failure if there is any risk to put the tank in service

This a short and simple energy saving tips for the boiler system, the objective is to increase awareness for the energy saving best practices for the common energy consuming system in the industry. Please share it with others to spread the knowledge and save resources.

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English version video

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]]>Oil And Gas Processmagdyharby1https://www.egpet.net/vb/showthread.php?t=109578https://www.egpet.net/vb/showthread.php?t=109577&goto=newpost
Fri, 30 Nov 2018 10:04:21 GMTWhich Flow Computers for gas are used in Russia and have a GOST Type approval?
Thank you!

Which Flow Computers for gas are used in Russia and have a GOST Type approval?
Thank you!

]]>Oil And Gas Processmathijn75https://www.egpet.net/vb/showthread.php?t=109577relief load calculation spread sheethttps://www.egpet.net/vb/showthread.php?t=109507&goto=newpost
Wed, 21 Nov 2018 14:32:14 GMTHi, can any one please share a relief load calculation spread sheet? All related links have not been available. Many many thanks! JOHN0125@163.com

Hi, can any one please share a relief load calculation spread sheet? All related links have not been available. Many many thanks! JOHN0125@163.com